Real property owned by the national government is exempt from real property taxation unless the national government: (2011 Bar Question)

The question

Real property owned by the national government is exempt from real property taxation unless the national government: (2011 Bar Question)

1. A.transfers it for the use of a local government unit.
2. B.leases the real property to a business establishment.
3. C.gratuitously allows its use for educational purposes by a school established for profit.
4. D.sells the property to a government-owned non-profit corporation.

This question has not been answered yet.